Minimal damage tolerance for automotive components made of fiber composites


The use of CFK materials in the automotive industry will increase steadily in the coming years. If components from fiber composites are damaged, previous methods for damage assessment can no longer be applied adequately. Therefore, components can be exchanged with injury, instead of being repaired.

Initial situation

  • Approximately 1/3 of the average consumption of a passenger car is directly related to the translation and rotation moving mass of the vehicle

  • Fiber composites (CFK) are much lighter than steel or aluminum

  • According to today's state of the art damaged components are exchanged directly, resulting in high repair costs for the customer and high kasko classifications with the vehicle insurance


  • Development of methods for assessing whether car components can be replaced or re-utilized from fiber composites, despite damages

  • Analysis of typical component and material specific damage

  • Development of a method for non-destructive determination and classification of damages

  • Derivation of possible repair methods for different applications